hey i have a 2.3l duratec with a 4.10 open diff soon to be locked with powertrax lock right. I am planning on putting on 33s will it be as slow as everyone says. it is auto

 

Possibly even slower than that.

 

LOL ^^^

2.3l DOHC has some good torque so I don't think it will be too bad, 28" to 33" tires will drop 0.6 in the actual ratio, so 4.10 will be 3.50 with the 33" tires
You will get some good top speed, but off the line or towing would be marginal
You will probably want to have OD OFF even on the highway to avoid lugging the engine, under 70mph

Tire size and rear axle chart here: https://www.therangerstation.com/how...ze_chart.shtml

Chart is based on V6 engines that make best torque at 2,600-2,900rpm
Your 2.3l DOHC does best torque at 3,700rpms, so you do need to keep the RPMs higher, which can be hard with automatics

 

Not hard at all if you use the auto as a manual. Set the lever to the lower part and shift up at 4K till you get to Drive. Old timer like me would know about this. Just saying.

 

so if I was to be choosing from 32x11.5r15 vs 33x12.5r15 would I feel that difference in either of those sizes

 

Not much in acceleration but in stopping, the 12.5" wide are about 10lbs heavier at 57lbs, stock 28" tires weigh about 27lbs, what brakes are rated for, so you will need to pay attention to stopping distance, you will notice that

Getting the heavier wheels rotating is one thing, that's torque, and once at speed they can be harder to slow down, lol

 

ive got same motor (3.73 gear ratio) running 32x11.5 BFG A/T a lil slow on take off but not too bad